EUVD-2026-35385
GHSA-c23g-cgv4-p67j
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V8 - Authorization Unnecessary privilege execution
|
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Alert meAnalysisAIv1 – Jun 09, 2026
Local privilege escalation in Siemens SINEC INS (versions prior to V1.0 SP2 Update 6) stems from a binary shipped with the Linux cap_dac_override capability, which bypasses filesystem discretionary access control checks. An authenticated local attacker can leverage this overly broad capability to read or modify any file on the system, ultimately obtaining root. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.
Affected VersionsENISA
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Primary rating from Vendor (siemens) · only source for this CVE.
CVSS VectorVendor: siemens
Lifecycle Timeline
1DescriptionCVE.org
A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 6). The affected system includes a binary that is configured with the cap_dac_override capability. This capability allows the process to bypass file system permission checks, resulting in unrestricted file system access. This could allow a local attacker to escalate privileges leading to arbitrary file modification and gaining root privileges on the system.
Executive ViewAI
Siemens SINEC INS versions prior to V1.0 SP2 Update 6 contain a local privilege escalation vulnerability (CVSS 8.7) enabling authenticated local users to obtain root access through an overly permissive binary capability. This directly threatens confidentiality and integrity of operational technology environments. Organizations running affected versions must immediately restrict local system access to limit exposure to this root-level escalation path.
24 hours: Inventory all Siemens SINEC INS deployments and document current versions; flag any systems running versions prior to V1.0 SP2 Update 6. 7 days: Implement strict least-privilege access controls restricting local logins to essential administrators only; enable detailed authentication and file-modification logging on affected systems. 30 days: Monitor for Siemens release of V1.0 SP2 Update 6 and prepare staged deployment; evaluate network segmentation and access monitoring as interim measures if patch release is delayed.
No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict local system access to trusted administrators only; (2) Implement file integrity monitoring with alerts on sensitive system files; (3) Enforce centralized authentication for all local account access; (4) Segment SINEC INS systems from untrusted networks; (5) Audit system capabilities and binary permissions regularly for unauthorized cap_dac_override binaries.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
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SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
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